Combined lunch box and writing slate



FIG. 1 is a front elevational view of a combined lunch box and writing slate showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof with the handle in a folded position;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a side elevational view thereof. 

The ornamental design for a combined lunch box and writing slate, as shown and described. 